Holly Willoughby, the former This Morning presenter, has sparked speculation with a Halloween-themed Instagram post that appears to reference her ex-co-host Phillip Schofield’s alleged “witch” remarks about her. The post, shared on Thursday, featured a photograph of supermodel Kate Moss strutting down the runway dressed as a witch, accompanied by Lana Del Rey’s song Season of the Witch. This cryptic message comes amid reports that Schofield had branded Willoughby a “witch” following their highly publicised falling out earlier this year. The timing of Willoughby’s post has raised eyebrows, as i…